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Patent Searching and Data


Title:
MULTI-LAYER DISK FAN WITH BLADES
Document Type and Number:
WIPO Patent Application WO/1992/016751
Kind Code:
A1
Abstract:
A multi-layer disk fan with blades, which is operable quietly. In the multi-layer disk fan with the blades formed by laminating a multiplicity of annular disks at predetermined intervals therebetween, the arrangement having such a feature that a multiplicity of blades are interposed between the annular disks and the outer ends and/or the inner ends of the respective blades are positioned a predetermined distance inward of the outer peripheral edges of the annular disks is adopted. With this arrangement, turbulent flow caused by peeling at the tips of the blades through the effect of laminar flows by the disks can be effectively prevented, and moreover, distortion in the outlet speed at the outer peripheral edges of the annular disks can be controlled to reduce noises due to the turbulent flow and the interference, thus enabling the quiet operation.

Inventors:
HARAGA HISATO (JP)
HAMADA YASUO (JP)
AKAMATSU KATSUSHI (JP)
Application Number:
PCT/JP1992/000312
Publication Date:
October 01, 1992
Filing Date:
March 13, 1992
Export Citation:
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Assignee:
TOTO LTD (JP)
International Classes:
F04D17/16; (IPC1-7): F04D17/08
Domestic Patent References:
WO1991013257A11991-09-05
Foreign References:
JPS503110U1975-01-14
JPS5140282B21976-11-02
JPS5139687B21976-10-29
Other References:
MURATA and six others, Japan Machinery Society Papers, 42-354 (Sho51-2), (February 1976), p. 531.
MURATA and two others, Japan Machinery Society Papers, 41-346 (Sho50-6), (June 1975), p. 1853.
See also references of EP 0529099A4
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